Overview
Utility Zones
There are two main utility zones in Illinois Solstice works with: Ameren and ComEd. Note a third utility, MidAmerican, does have a slight bit of coverage into Mercer and Henry Counties where Ameren and ComEd coverage ends.
The below table shows the total sums of the demographics and LMI populations by utility zone coverage. ComEd covers about three times as much population as Ameren in Illinois.
Geoqualification
The Microsoft Engie project uses a geoqualification map that was designed by Solstice. More details on the data used to create this map can be found Geospatial Methodology tab.
Note in the below table, you’ll see the Engie map covers nearly 62% of the state’s population.
LMI Qualification
For the Engie program, we use percentage of households earning up to 80% and 100% AMI, number of households receiving SNAP and Medicaid to estimate LMI populations.